Remove Rubocop skip comment from migration style guide [ci skip]
What does this MR do?
Removes the Rubocop skip comment from the migration style guide. This was an error in previous MR https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4693
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Removes the Rubocop skip comment from the migration style guide. This was an error in previous MR https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4693